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Finding the Fourth Proportional to 19,903.74, 29,867.53 and 7,432.53

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Solution

The fourth proportional to 19,903.74, 29,867.53 and 7,432.53 is: 11,153.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,903.74 : 29,867.53 = 7,432.53 : x
  2. Step 2: Convert to fraction form
    19,903.74/29,867.53 = 7,432.53/x
  3. Step 3: Cross multiply
    19,903.74x = 29,867.53 × 7,432.53
  4. Step 4: Simplify right side
    19,903.74x = 221,991,312.75
  5. Step 5: Solve for x
    x = 221,991,312.75/19,903.74
  6. Step 6: Final answer
    x = 11,153.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.